51154678276 has 27 divisors (see below), whose sum is σ = 96947746581. Its totient is φ = 23607137424.

The previous prime is 51154678273. The next prime is 51154678297. The reversal of 51154678276 is 67287645115.

The square root of 51154678276 is 226174.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7567260100 + 43587418176 = 86990^2 + 208776^2 .

It is a super-2 number, since 2×51154678276² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51154678271) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5876175 + ... + 5884873.

Almost surely, 2^51154678276 is an apocalyptic number.

51154678276 is the 226174-th square number.

It is an amenable number.

51154678276 is a deficient number, since it is larger than the sum of its proper divisors (45793068305).

51154678276 is an frugal number, since it uses more digits than its factorization.

51154678276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17428 (or 8714 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 52.

The spelling of 51154678276 in words is "fifty-one billion, one hundred fifty-four million, six hundred seventy-eight thousand, two hundred seventy-six".